lastfm-parse-rs is a collection of serde-based data types for Lastfm API plus some functionality to form proper API requests. It doesn't come with a full-fledged client, but can be used to build one.
Include following lines to your Cargo.toml in order to use this library:
[dependencies]
lastfm-parse-rs = { git = "https://github.com/xenzh/lastfm-parse-rs" }Unfortinately it's not on crates.io yet since I rely on latest master of async-http-client crate for the tests which was not published yet (And I'm too lazy to switch to something properly supported).
Library exposes a bunch of data types through tag, track, user etc modules and a couple of parser functions like from_json_str(). In addition, each of said types has associated request() function returning an object that can be used to form an API request for the type.
For convenience types are named after corresponding API methods: for instance, artist.gettopalbums method is represented by lastfm_parse_rs::artist::GetTopAlbums data structure.
Please note that example below uses Tokio-based async-http-client crate, so it may look a bit unusual. But in fact any HTTP/1.1 client can be used, last time I've checked the library was not bound by any networking code, except for tests.
extern crate async_http_client;
extern crate lastfm_parse_rs;
use lastfm_parse_rs::from_json_slice;
use lastfm_parse_rs::structs::artist::GetInfo;
use async_http_client::prelude::*;
use async_http_client::HttpRequest;
fn main() {
let base_url = "http://ws.audioscrobbler.com/2.0/";
let api_key = "INSERT_YOUR_API_KEY_HERE";
let get_info = GetInfo::request(base_url, api_key, "iamthemorning", None, Some(1), None, None);
let req = HttpRequest::get(get_info.as_url()).unwrap();
let mut core = Core::new().unwrap();
let addr = req.addr().unwrap();
let handle = core.handle();
let (res, _) = core.run(TcpStream::connect(&addr, &handle).and_then(
|conn| req.send(conn),
)).unwrap();
let res = res.unwrap();
let data: GetInfo = from_json_slice(res.get_body()).unwrap();
}All GET API methods except those that require authentification should be covered. Scrobble API along with the other POST authentication-requiring things should work, too; see this for bad and incomplete example on how to authenticate.
I'd expect some bugs here and there since methods were not really tested on all possible argument combinations.
I plan to work on a client library next and expect this one to be updated with auth-based stuff and POST requests support.
MIT